Improved shearing apparatus



Urrrrnn Srarns PATENT Gitarren.

ISAAC LAMPLUGH, OF SPRINGFIELD, ILLINOIS.

IMPROVED SHEARING APPARATUS.

Specification forming part of Letters Patent No. 58,267, dated September 25, 1865.

To all whom it may concern:

Be it known that I, Isaac LAMPLUGH, of Springfield, county ot' Sangamon, and State of Illinois, have invented a new and Improved Shearing-Machine; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being' had to the accompanying drawings, making a partof this specification, in which- Figure l is a perspective view of the front side of myrmachine. Fig. 2 is a similar view of the bach side of themachine. Fig. Sis a front elevation ot' the machine, showing` the shear-blade and contrivances for moving it in two positions. Fig. 4 is a top view'. Fig. 5 :is a vertical cross-section through the front part of the machina Similar letters of reference indicate correspondin g partsin the several figures.

This invention relates to a new and improved machine which is adapted for shearing metal and other hard substances, and which is so constructed that the shear-blade is supported between solid metal jaws in its vibrating movements, which jaws constitutea part of a frame that sustains the contrivanees for operatin g the shears, and also sustains and guides the metal during t-he operation of shea-rin g it, as will be hereinafter described.

By my invention I produce a portable shearing-machine which can be sustained in a common vise, or readily secured to a bench or trestle, and which can be taken apart and packed into a very compact compass for transportation, as will be seen from the following description.

To enable others skilled in the art to make' ranged with reference to the lower jaw, c, and v the back surface of this jaw that a space is formed to receive the shear-blade a, which latter is sustained between the 'two jaws and prevented from being thrust out laterally by them during the operation of shearing.

The lower edge of the jaw b is nearly in a horizontal pla-ne with the upper edge of the lower jaw, c, and the width ot' the shear-blade is such that its sides always impinge upon the at surfaces ot' both jaws whether the free end of this blade be elevated ordepressed. The back or upper4 jaw, b, will therefore keep the cutting-edge of said blade in close contact with the stationary cutting-edge of a steel piece, g, that is inserted into and flush with the upper and vertical faces of the lower jaw, c. This fixed steel blade g may be welded or bolted or secured to the jaw c in any other suitable manner.

The upper edge of the jaw c forms, in con.- junction with the ledge e, a bearing for the metal or other substance which is being sheared and the vertical face o' of the frame A, which is in a plane with the front face of t-he shearblade a, serves to guide the strips of metal during the operation of shearing.

The shear-blade c is pivoted at one end to an ear, h, by a pin, IL', and at the other end it is pivoted to short links t' i, which are again pivoted to a hand-lever, B, as shown in Figs. l and 3. The lever B, which may be made very long, is pivoted by means ot' a pin, j, to an overhanging ear, lr. pressing lever B a vibrating movement will be imparted to the shear-blade, as indicated by the red and black lines, Fig. 3.

The two ears 7L and 7c are cast with the jaw b, and overhang the vertical face ot this jaw to receive within them their respective parts; and the pins which enter these ear-bearings may have heads formed on their ends to admit of their ready removal when it is desired to take the machine apart andpack it up.

On the back surface of the jaw b, I form a rib, b', which extends from the front end of this jaw back some distance, as .shown in Figs. 2 and 4, and adds great strength to the jaw against lateral strain.

That portion of the machine or frame of the machine which extends back of the jaws con, stitutes a solid stock, for enabling ine to se cure the shears to a vise or bench 5 and, it' de By elevating and'desirable, clamps may be applied to said stock The improved portable shearing-machine to secure it to a bench or other Xed object. constructed as herein described and shown, as

l disclaim the construction shown in the a new article of manufacture.

rejected. application of SamLJ ones; but 4While ISAAC LAMPLUGH.

doing so I Wish it to be understood that WhatI claim as new and useful, and desire to secure by Letters Patent, is l /Vitnesses EDMUND PAGE, GEO. W. GRAHAM. 

